Solar cell

Abstract

The present disclosure relates to the technical field of solar cells, and provides a solar cell. The solar cell may include a plurality of cells and a plurality of ribbons. Each cell includes a plurality of grid line sets arranged side by side along a first preset direction, each grid line set includes a plurality of grid lines of a preset length arranged in parallel along a second preset direction, and the grid lines in two adjacent grid line sets are disconnected, where the first preset direction is perpendicular to the second preset direction. Each ribbon connects the plurality of cells to one another in series and is soldered to all the grid lines in one grid line set of one cell. According to the present disclosure, the plurality of grid line sets are disposed at the cell, and the grid lines between the grid line sets are disconnected from each other, which can save an amount of grid line paste and costs. In addition, compared with continuous grid lines, the disconnected grid lines between the grid line sets reduce shielding of the cell, and increase a light absorption area of the cell, thereby improving the performance of the cell.

What is claimed is: 
     
         1 . A solar cell, comprising:
 a plurality of cells, wherein each of the cells comprises a plurality of grid line sets arranged side by side along a first preset direction, each of the grid line sets comprises a plurality of grid lines of a preset length arranged in parallel along a second preset direction, and the grid lines in adjacent two of the grid line sets are disconnected, wherein the first preset direction is perpendicular to the second preset direction; and   a plurality of ribbons, wherein each of the ribbons connects the plurality of cells to one another in series and is soldered to all the grid lines in one of the grid line sets of one of the cells.   
     
     
         2 . The solar cell according to  claim 1 , wherein
 the number of the grid line sets on each of the cells is the same as the number of the ribbons.   
     
     
         3 . The solar cell according to  claim 2 , wherein
 the number of the ribbons at each of the cells is greater than 28 and less than or equal to 78.   
     
     
         4 . The solar cell according to  claim 1 , wherein
 the ribbon is soldered in middles of the grid lines in the corresponding grid line set.   
     
     
         5 . The solar cell according to  claim 1 , wherein
 the ribbon is a special-shaped ribbon, the special-shaped ribbon comprises a special-shaped segment and a flat segment, and the special-shaped segment is soldered to the grid line set.   
     
     
         6 . The solar cell according to  claim 5 , wherein
 a section of the special-shaped segment of the special-shaped ribbon is in a shape of a triangle, and a base of the triangle is soldered to the grid line.   
     
     
         7 . The solar cell according to  claim 6 , wherein
 the triangle is an equilateral triangle; and a side length of the equilateral triangle is 0.15 mm.   
     
     
         8 . The solar cell according to  claim 1 , wherein
 the ribbon comprises an internal core layer and an external plating.   
     
     
         9 . The solar cell according to  claim 8 , wherein
 a section of the internal core layer is formed in a shape of a triangle with two inwards-recessed sides.   
     
     
         10 . The solar cell according to  claim 9 , wherein
 three corners of the triangle of the section of the internal core layer are all round corners.